Home / 4,947.40-7,412.10-3,914.20

Finding the Fourth Proportional to 4,947.40, 7,412.10 and 3,914.20

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Solution

The fourth proportional to 4,947.40, 7,412.10 and 3,914.20 is: 5,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.40 : 7,412.10 = 3,914.20 : x
  2. Step 2: Convert to fraction form
    4,947.40/7,412.10 = 3,914.20/x
  3. Step 3: Cross multiply
    4,947.40x = 7,412.10 × 3,914.20
  4. Step 4: Simplify right side
    4,947.40x = 29,012,441.82
  5. Step 5: Solve for x
    x = 29,012,441.82/4,947.40
  6. Step 6: Final answer
    x = 5,864.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.